Brake-shoe.



' H; H. MOALISTER.

BRAKE SHOE. APPLICATION FILED mm: 21, 1909.

Patented Dec.28, 1909.

H. H. McALISTER.

I .BRAKE SHOE. APPLIOATION FILED JUNE 21, 1909.

944,57 3. Patented Dec.28,1909.

2 sinus-sum 2. Hg. 5. I

I WITNESSES ALIs'rnR,

I be used on wheels at either sideof .the locoinv an emergency forsecuring bolt ordinarily. employed for that purpose 1 To all whom it mayconcern:

locomotives and cars,-

bility also makes it possible 'to 'supply the shoes are notreversible'because when not'rewheels of each side, of the locomotives orJsuch construction preventing the broken HENRY Hone McALis'rnn, orFITZGERALD, cnonem.

BRAKE-SHOE.

944,573. 'Specification of Letters Patented Dec 28, 1909.

filed June 21, 1909. Serial No. 503,416.

Application Be it known that I, HENRY Hons Moa citizen of the UnitedStates, re.- sidin at Fitzgerald, in thecountyof Irwin and tate ofGeorgia,jhave' invented certain new and useful Improvements invBrakeishoes; and I do declare the following to be a full, clear, andexact description of. the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanyingdrawings, and to the figures of referencemarked thereon, which form a part of this specification.

My invention relates to brake-shoes for and while designed moreparticularly for locomotive driving wheels yet possesses featuresrendering it applicable for car-wheels in general.

part.

It has further for its object to provide an improved construction andapplication of chilled wearinginserts in the face and the flange grooveportions of the brake-shoe so as to insure said inserts being securelyheld in place loose and separated from the shoe, or lost, and in whichthey will serve to more effectively dress the face of the wheels wherethey are least worn by contact with the rails.

To the accomplishment of the foregoing and such other objects as mayhereinafter PP hereinafter particularly described and then sought to beclearly defined by the claims, reference being had to the accompanyingIt has for its object to construct a brakewhich shoe which will bereversible so that it'may proved brake-shoe, showingit attached to abrake-head; Fig. 2 is a front or face view of the brake-shoe; Fig. 3 isa face view of the reinforcing strip; ig. t an edge view of the same;Fig. 5 is a face View of one of the cen trally disposed chilled inserts;Fig. 6 an end view of the same; Fig. 7 a face viewof one of'the endinserts; Fig. same; Fig. 9 a face view-of one of the flangegroovechilled inserts; Fig. 10 a side view of the same; Fig. 11 an end view ofthe same; and Fig; 12 a plan viewof two modi lied forms of chilledinserts. V

In the drawings, a brake-shoe having the face or tread por-' tion 2 andthe flange-groove portion 3, which are of cast metal :as usual. I v

The numeral 4 designates two U-shaped lugs of fmalleablejronjor steelcast in the shoe, one at each end, and normally stand ing up from thebody of the shoe but adapted to be bent inwardly over either, or bothends of the brake-head 5, one of them being so indicated by dotteddrawing. The shoe is cast with two boltholes ,6, one near each end, sothat a bolt 7 may be passed through the lower hole, ac-. cording as oneend maybe placed at the bottom of the brakehead; thebolt being securedin place by a pin 8,.so as to he the shoeto the brake Ahead. the shoewith two lugs,

motive or car, or used first on one side and when partially worn may betakenoif and applied to the wheels at the other side of the locomotiveor car thus enabling it tobe used until practically worn on Thisreversidemands of the equipment department of a road with one-half thenum er of brakeshoes necessary to keep on hand where the versible'asufficient number of shoes for the care must be kept in stock. It-hasfurther for its object toprovide a construction in which the brake-shoewill be provided at each end with means for connecting the shoe to thebrake-head at the top of the brake-head at whichever side of the,locomotive or car the shoe may be applied,; and in, which said meansmaybe employed the lower en ofthe brake-shoe to the lower end of thebrake-head in the event that the attaching.

should become broken or detached, and lost. It has further for itsobject to provide an' improved construction for reinforcing thebrake-shoe and to guard. against the destruction of the efiiciency ofthe brake-shoe in the event of the brake-shoe becoming broken,v

By fo ming part from becoming detached from the other without thepossibility of becoming Figure 1 1s a side elevation of the imthenumeral 1 designates ear the invention consists in the features drawingsforming apart hereof, and in Y 8 an end view of the lines "in Flg. '1 ofthe or the other of the shoe one at each end, and with two bolt-holes,one

near each end, the shoe can be applied. to a.

brake-head at either sideof the locomotive,

and abolt passed through the lower'hole to attach the shoe at that endto the brakehead, and the lug at the top maybe bent over the brake-headso as to serve as a means for connecting the shoe at the upper end tothe brake-head. In the event of the bolt becoming broken or accidentallydetached and lost, the loop at the lower end of the shoe may be bentover onto the brake-head so as to secure the shoe thereto; and it willalso serve to prevent the shoe from rising up on the brake-head in thebacking of the engine. It will thus be observed that thefuse of the twoloops and the two bolt holes ni'ake it possible to reverse the shoes soas to use upper end of the shoe to the brake-head: and 5 'them on eitherside of the locomotive and that the loops also serve for connectingthein case of emergency to secure its lower end to the head. i

For the purpose of reinforcing the brakeshoe so as-to give it additionalstrength and also to prevent a part of it from separating from anotherpart in the event of accidental breakage, a reinforcing strip 9,preferably of malleable metal, is inserted and cast in as a part of theshoe, the strip being located near the rear portion of the shoe, andextending lengthwise thereof.

holes in the body portion of the shoe, and has spurs 1O struck-up fromthe metal, preferably by cutting and bending the cut porerably so thatthose to each side of the cen-' ter will incline toward the center, asillus-.

trated, and at the central portion it is preferred to have more of thespurs than at another one point. By having the spurs in- -cline towardthe center. they will serve to hold the broken portion of the shoe tothe other portion, in case of accident, and prevent the possibility ofit slipping down-- wardly and outwardly and separating from the' otherportion, whichevervend' of the shoe be uppermost. These spurs alsoprevent the vpossibility of the strip working loose and slipping in anydirectlon in the body of the shoe; and the cast metal portionbeingmolded about the strip the spurs become embedded therein so as tobe practically a part thereof.

To increase the durability of the wearing surface of the face or headand also the flange-groove of the shoe and to afford ashearing cuttingtool for dressing the sur- This strip is. formed with holescorresponding to the bolt faces of the locomotive or car wheel which areleast worn by contact with the rails, I

provide chilled metal'inserts for both the tieadand the flange-grooveportions of the s cc.

tion of the shoe are designated by the numerals 11 and 12,- the insertsat the ends being 11 and the intermediate inserts 12, the formerextending preferably substantially the width of the face or tread andthe others only partially across the face, and the intermediate onespreferably formed in pairs, as illustrated. Each insert is serpentine ina longitudinal direction, the outline of which may be of difierentconfiguration, for instance such as illustrated in Figs. 5 and 7, or asillustrated in Fig. 12, or otherwise. Each insert has a T headdesignated by the numeral l3, and the body or tongue portion of theinsert stands at an inclination to a normal to the curved face of theshoe as illustrated. These inserts are-so disposed on each side of aline passin transversely through the central portion 0 the shoe that theinserts. on one side of the central portion will incline in the oppositedirection to the inserts on the other side, say from the face rearwardlyand toward the end-of the shoe on the side of thecentral portion wherethe inserts are located, and also disposed in such manner that theinserts on one side of the central portion will be the oppositeorreverse of the corresponding inserts on the other side. This willcause the chilled inserts to act in the same manner on the same parts ofthe wheel whether the locomotive is going ahead or backing up, orwhether the shoe is reversed for use on one side or the other of thelocomotive or car. These inserts are molded in the shoe in the operation1 of casting the shoes, and the T heads to the inserts and theinclination of the tongue portions tend to effectively guard against thepossibility of the inserts becoming loose 1n the shoes, or separatingtherefrom in the 11 event of accidental fracture of the cast metalportion of the shoes. The serpentine contour or lines of the insertsafi'ord shearing cutting edges that serve to dress the treads of thewheels, especially those portions that have the least wearlng contactwith the rails. The flange-groove portion of the shoes is likewiseprovided with chilled inserts 14 which are preferably curved in crosssection, to a greateror lesserdegree and are inclined to a vertical lineand provided with a T head, and are preferably although'not necessarilyconnected in groups to the same head as illustrated in Figs. 9

and 10. The inserts on one side of a central line passing transverselythrough the groove ,portion'. are the oppos te or reverse to the.

correspondlng inserts on the other side so that they will act inthe'sameway and on the same portions of. the car wheel flange 3 The inserts forthe face or tread por- 7o being deflected,

I the shoe, substantially as des whether used on one side or'the otherof the locomotive or car, and whether the locomotive be going ahead orbacking.

A shoe constructed'with the features specified possesses great strengthand durability,

and is capable of being reversed so-as to be used on either side of thelocomotive and thus obviates the necessity of keeping on Havingdescribed my invention and set forth its merits, what I caim 1s 1- 1. Abrake-shoe provided at opposite ends with laterally extending memberscapable of being deflected for connecting-the shoe to a brake-head,substantially as described.

2. A brake-shoe formed adjacent to each end with a bolt-hole forthepassage of an attaching bolt and provided at opposite ends withlaterally extending members capable of members adapting the shoe to bereversed for attachment to a brake-head at either side ofan engine orcar, substantially as 1 described.

3. A brake-shoe having embedded therein a reinforcing plate, said platebeing formed with spurs projecting from its opposite faces and engagingthe metal of the shoe on both sides so the plate, substantially asdescribed.

4. A brake-shoe having embedded therein a reinforcing plate, said platebeing wholly contained within the body of the shoe below its rear faceand formedwith spurs projects ing at an inclination from its face alongthe portion thereof lying back of the face or tread portion of the shoeand engaging the metal of the shoe, substantially as described.

5. A brake-shoe having embedded therein a reinforcing plate, said platebeing wholly contained within the body of the shoe below its rear'f'aceand formed with spurs inclined in op ositedirections along the portionthereo lyingback of the face or tread portion of the shoe and engagingthe metal of dribed.

6. A brake-shoe having embedded therein a reinforcing plate, said platebeing wholly contained within the body 'of the shoe below its rear faceand formed on opposite sides of the central portion of the-plate withinclined spnrisdthe spurs on one side inclining toward the inclinedspurson the other side'of said central portion and in a direction towardthe central gortion of the shoe, substantially as describe 7. A'brake-shoe provided in itstread-face with chilled inserts extendingtransversely said holes'and' extending across the faceand having anirregular sectional outline, said inserts lying on opposite sides of aline passing transversely through the tread, and the inserts on one sideof said 'Iine being oppositely or reversely disposed to inserts'on theother side of the line, the

inserts on' one side of said line extending.

at an inclination opposite to the inclination of the inserts on theother side of said line and each of said inserts inclined to a normal tothe curvatureof the face of the shoe, substantially as described.

8. A brake-shoe provided in its tread-face with chilled insertsextending "transversely across the face and irregular in outline, saidinserts lying on opposite sides of a line passing transversely throughthe tread, some of said inserts being arranged in Hairs and po--sitioned intermediate of theen inserts, and

the inserts on one side of said transverse line being reversely disposedto inserts on the op posite side of said line, substantially asdescribed- 9.. A brake=shoe provided in its tread-face withchilledinserts extending transversely across the face, said inserts lying onopposite sides of a line passing transversely through the tread, and theinserts on one side of said line etending at an inclination opposite tothe inclination of inserts on' the other side of said line the insertstoward the ends'of the shoe extending substantially the width of thetread-face and the intermediateinserts extending partially across thewidth of the tread-face, substantially as described.

10. A brake-shoe provided in its treadfacewith chilled insertsextending. transversely across the face, said inserts lying on posed onopposite sides of a linepassing; transversely throu h the roove, and theinserts on one side 0 said line being reversely disposed to the insertson the opposite side thereof, substantially as described.

12. A brake-shoe formed with a flangegroove and provided in the groovewith chille'd inserts curved transversely to the length of the groove,said inserts being disjopposite sides of a line passing transverselyposed on opposite sides of a line passing Y transversely through thegroove, the inserts on each side of said line having degrees ofcurvature differing from each other, substantially as described.

13. A brakehoe formed with a flangeoove and provided in the groove withchilled inserts curved transversely I, to the whereof I aflixmysignatnre length of the groove, said' inserts being distestimony inpreseneeof two w'1tnesses.

posed on opposite sides of a v line passing transversely throu h thegroove, and the in- 1 serts on one side 9 said lme beingreversely 1HENRY ER" '5 disposed and inclined to the inserts on the vWitnesses: voppggite side thereof, substantially as dey A. B. Cook;

0. E. Bum;

